Abstract
Recently, researchers have focused on optoelectronics based on two-dimensional van der Waals materials to realize multifunctional memory and neuron applications. Layered indium selenide (InSe) semiconductors satisfy various requirements as photosensitive channel materials, and enable the realization of intriguing optoelectronic applications. Herein, we demonstrate InSe photonic devices with different trends of output currents rooted in the carrier capture/release events under various gate voltages. Furthermore, we reported an increasing/flattening/decreasing synaptic weight change index (∆Wn) via a modulated gate electric field, which we use to imitate medicine-acting metaplasticity with effective/stable/ineffective features analogous to the synaptic weight change in the nervous system of the human brain. Finally, we take advantage of the low-frequency noise (LFN) measurements and the energy-band explanation to verify the rationality of carrier capture-assisted optoelectronics applied to neural simulation at the device level. Utilizing optoelectronics to simulate essential biomedical neurobehaviors, we experimentally demonstrate the feasibility and meaningfulness of combining electronic engineering with biomedical neurology.
Highlights
The brain is the main intelligent organ
The materials have enabled the development of synaptic devices, including resistive memory, sensors, and fieldeffect transistors (FETs) with various operating mechanisms such as ferroelectric or charge-trapping layer, electrochemical memory, and optoelectronic memory[2,3,4,5,6]
We developed a drug dosage modulator utilizing indium selenide (InSe) optoelectronics, which represents a significant step toward achieving the generation of nanoelectronic devices based on artificial intelligence
Summary
The brain is the main intelligent organ. It has exclusive architecture that facilitates and executes highly energy efficient short-term computation, long-term learning, and memorization using the network of synapses in the neural system for data processing.
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